Update YUI to patched-v3.15.0
Fix misterous test
AUI-1191 Browser redirects page when trying to delete the selected connector
AUI-1191 Adding tests
AUI-1202 Typo API Docs from Toggler Delegate
AUI-1202 Add missing API Docs markup
AUI-1203 Moving a node in the diagram builder changes the scrollbar of window instead of canvas scroll
AUI-1195 aui-datatable-edit - option can not be added
AUI-1211 Fix Y.Button duplicated icon due labelHTML added by YUI 3.15.0